^Pola Negri's original surname was Chalupec or - according to Polish alphabet's rules - Chałupec. Some sources use polonized form Chałupiec, which doesn't exist in any official documents concerning Pola Negri.

^Martin Votruba (12 April 2013). "Pola Negri". Slovak Studies Program. University of Pittsburgh. Diakses tanggal 22 January 2015. The exact spelling of her and her parents' names is complicated by the mandated use of Russian in government records in that part of [partitioned] Poland, when she was born. For instance, her father's last name is recorded as Халупец at the Lipno Office of Vital Records, which can be rendered in Polish as Chalupec, Chałupec, Chalupiec, or Chałupiec.

^Some sources cite 31 December 1896 as Negri's date of birth but the four-day discrepancy is due to the change in styling from the Julian calendar (OS) of Imperial Russia to the Gregorian calendar (NS) in Poland, per biographer Mariusz Kotowski, who uses the 3 January 1897 date in his biography of her life. Negri herself used both dates on different documents, including United States immigration and naturalization paperwork, but liked to use the 31 December date and to state that she was born on the last day of the 19th century, which is why some documents, including Social Security, cite 31 December 1899, as does her crypt (see here), indicating that Negri had made herself three Tahuns younger.